Johann Gottlieb Janitsch (1708–1763) was a German composer and viol player, notable for his contributions to the Baroque and early Classical music periods. Born in Stettin (now Szczecin, Poland), Janitsch became a prominent figure in the musical life of Berlin, where he was associated with the circles of Frederick the Great. Janitsch's work primarily falls within the realm of chamber music, and he is particularly recognized for his contributions to the genre of trio sonatas. His notable works include "Sonatas for violins and continuo," which are characterized by their intricate counterpoint and melodic inventiveness. His "Musicalische Rhapsodien" and "Sonatas for flute and basso continuo" showcase his skill in blending various instrumental textures. While Janitsch may not be as widely known as some of his contemporaries, his work significantly influenced the development of chamber music in the 18th century. His compositions reflect the transition from the late Baroque style to the emerging Classical idiom, bridging the gap between these musical eras and paving the way for subsequent composers. His legacy is preserved through the revival of his music in modern performances, highlighting the richness of the Baroque tradition.